1100012021121 has 32 divisors (see below), whose sum is σ = 1600969144320. Its totient is φ = 667747080000.

The previous prime is 1100012021113. The next prime is 1100012021137. The reversal of 1100012021121 is 1211202100011.

It is not a de Polignac number, because 1100012021121 - 2³ = 1100012021113 is a prime.

It is a super-2 number, since 2×1100012021121² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100012021097 and 1100012021106.

It is not an unprimeable number, because it can be changed into a prime (1100012021021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3197746 + ... + 3524996.

It is an arithmetic number, because the mean of its divisors is an integer number (50030285760).

Almost surely, 2^{1100012021121} is an apocalyptic number.

It is an amenable number.

1100012021121 is a deficient number, since it is larger than the sum of its proper divisors (500957123199).

1100012021121 is a wasteful number, since it uses less digits than its factorization.

1100012021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328437.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1100012021121 its reverse (1211202100011), we get a palindrome (2311214121132).

The spelling of 1100012021121 in words is "one trillion, one hundred billion, twelve million, twenty-one thousand, one hundred twenty-one".